Lockheed Martin X-59 Quesst QueSST Supersonic Airc T-Shirt

The Lockheed Martin X-59 Quesst ("Quiet SuperSonic Technology"), sometimes styled QueSST, is an American experimental supersonic aircraft being developed at Skunk Works for NASA's Low-Boom Flight Demonstrator project.[1] Preliminary design started in February 2016, with the X-59 planned to begin flight testing in 2021. After delays, as of January 2024, it is planned to be delivered to NASA for flight testing in 2024. It is expected to cruise at Mach 1.42 (1,510 km/h; 937 mph) at an altitude of 55,000 ft (16,800 m), creating a low 75 effective perceived noise level (EPNdB) thump to evaluate supersonic transport acceptability.